\Oar\, n [AS. [=a]r; akin to Icel. [=a]r, Dan. aare, Sw.
[*a]ra; perh. akin to E. row, v. Cf. {Rowlock}.]
1. An implement for impelling a boat, being a slender piece
   of timber, usually ash or spruce, with a grip or handle at
   one end and a broad blade at the other. The part which
   rests in the rowlock is called the loom.
Note: An oar is a kind of long paddle, which swings about a
      kind of fulcrum, called a rowlock, fixed to the side of
      the boat.
2. An oarsman; a rower; as, he is a good oar.
3. (Zo["o]l.) An oarlike swimming organ of various
   invertebrates.
{Oar cock}
   (Zo["o]l), the water rail. [Prov. Eng.]
{Spoon oar}, an oar having the blade so curved as to afford a
   better hold upon the water in rowing.
{To boat the oars}, to cease rowing, and lay the oars in the
   boat.
{To feather the oars}. See under {Feather}., v. t.
{To lie on the oars}, to cease pulling, raising the oars out
   of water, but not boating them; to cease from work of any
   kind; to be idle; to rest.
{To muffle the oars}, to put something round that part which
   rests in the rowlock, to prevent noise in rowing.
{To put in one's oar}, to give aid or advice; -- commonly
   used of a person who obtrudes aid or counsel not invited.
{To ship the oars}, to place them in the rowlocks.
{To toss the oars}, To peak the oars, to lift them from the
   rowlocks and hold them perpendicularly, the handle resting
   on the bottom of the boat.
{To trail oars}, to allow them to trail in the water
   alongside of the boat.
{To unship the oars}, to take them out of the rowlocks.

\Oar\, v. t. & i. [imp. & p. p. {Oared}; p. pr. & vb. n.
{Oaring}.]
To row. ``Oared himself.'' --Shak.
      Oared with laboring arms.                --Pope.